Actuating timer with unified control



March l2, 1929. n. D.V sMiTH l i AGTUATING TIMER WITH UNINED CONTROLrginal Filed- Dec. 15, 1917 3 Sheets-Sheet nllllllllllllllllllllllllulMarch 12, 1929. R. D. MHH 1,795,458

ACTUATING TIMER WITH UNIFIED CONTROL Original Filevd Dec. 15. 1917 3sheetsheet 2 MarchY 12, 1929. `R D, s'Mn-H ACTUATING mma WITH UNIFIEDconnor,

Original Filed Dec. 15. 1917 3 sheetsheet ILL@ Patented Mar. 12, 1929i.

UNITEDr -*STATES PATENT OFFICE.

RAYMOND D. SMITH, OF PLEASANTVILLE, NEW YORK, ASSIGNOR, BY VIESNEASSIGN- MENTS, T TREMONT'PRODUCTS CORPORATION, OF BOSTON, MASSACHUSETTS,A

CORPORATION OF MASSACHUSETTS.

ACTUATING TIMER WITH UNIFIED CONTROL.

Original application lecl December l5, 1917, Serial No. 207,303, PatentNo. 1,493,771. Divided and this application filed May 12, 1924. SerialNo. 712,739.

v This invention relates in general to timing mechanism for governingautomatic actuation of electric switches, gas valves, etc., andparticularly concerns timer mechanism of the type wherein the timer maybe energized and set in operation by the same control handle thatoperates the switch contacts, or

gas valve.

The subject matter of this invention is divisional from that oi' myissued United States Patent, No. 1,493,771.

By this invention I ain'enabled to employ, say, a switch-preferably withspring actuated contacts voit comparatively large electrical capacity,an associated timing mechanism, and a common control handle or .i otheroperating agency by means ot which the switch may be directly opeiatedby hand handles.

to control a circuit in the manner ot an ordinary. switch, and alsooperated automatically thru agency of the timing mechanism at apre-determined time, whereas in the mechanism of my co-pending applica.-tion, the switch and the timer were designed to be operated byrespectively different being wholly omitted better to .show the partsback of the panel.

F 4 shows in right elevation, and partially incentral section, thecomplete switch and timer mechanism. Fig.` 5 is a vertical sectionthrough a part ot the timer operating mechanism taken on the verticalplane 5 5`inl Fig. Il, looking in the direction of the arrows.

Fig. G is a plan view/taken inv section on the horizontal planes 6-6 inFig.

Fig. 7 is a sectional view siiiiilarto Fig. 5 but showing' the partsdifferently positioned, together with more or' the associated mechanism.

Fig. 8 is largely diagrammatic and shows a still diiierent operativeposition ot' the parts in Fig. 5.

Fig. 9, also diagrammatic, indicates these same parts in their normalposition, or that position which they always tend to assume.

Fig. l0 is a sectional View on the plane l0-10 in Fig. l.

ln Figs. 1 and t, binding posts for the circuit lead wires 2 appear atrlhe conductive blades l or" usual construction are friction-pivotedrespectively in lower terminal hinge clips 5 mounted on a verticalsupport panel 6, of slate or other suitable insulating' material, so asto swing into and out ot' circuit-closing engagement with upper terminalclips 7. A brace bar 8 oi insulating material bridges these blades attheir tops, but in place of the usual control handle for operating theblades7 this brace bar carries ai bracket mounting 9 for a detent catchlinger 11 pivoted at l2 land urged by a spring 13 to a position as shownin Fig. e, wherein a lower portion li of said linger abuts against thebrace bar 8, and an upper portion 15 extends upwardly to a position forintercept-ive engagement with a detent 16 carried between, and at theeX- treinities of the double armed detent lever 18, which is pivoted at19 to a bracket 2O mounted on the top edge ot the support panel 6.

The common control handle 22 for switch and timer is iixedly carried bya separately pivoted, actuating structure comprising a two-leggedupright swinging arm 23 that in tui'n is carried rigidly by, and as partof, the horizontal straddle-bar 24, each end of the latter being pivotedat 25 to bracket terminals 26 extending forwardly from either side otthe panel base. The entire actuating structure above described willhereinafter be referred to as the actuator.

A powerful, coiled, spring 27 connects an anchorage projection 28 of theactuator and a corresponding anchorage projection 29 of the bladestructure, this spring normally acting to hold the actuator and theblade structure together as shown in Fig. 4, where buffer lugs 30 formedas extensions of theV bracket 9 are shown as seated in spring bufferclips 31 carried by the actuatorfor shock-absorbing purpose. f

Itfshould be 'noted that the angle made by th'efor'ward engaging edge 32of catch linger 11 relative to the path of travel of detent 16 ascarried by detent lever 1,8l is such as to exert -pressure on thisdetent in a direction that will tend to displace said detent upwardlyand out of the path ofsaid finger to permit switch-opening movement ofthe blade structure whenever the detent lever 18 is free to? yield. Onthe other hand, this angle` is not such as to set up reactive pressureon the pivoted catch finger 11 in a directionto cause thelatter ytoyield downwardly to vpermit such switch-opening movement of the bladestructure; although it will be evident from inspection of the mechanicalrelation of parts, as shown in Fig. 4, that movement of the bladestructure to closefthe switch will always be permitted freely by suchdownward yielding of the catch finger'whenever the detent arm 18 islocked against upward yielding movement.

It isy thus apparent that the blade structure is normally free tov bemoved to and from its switch-closing position, and that to locky thesame therein, it is necessaryinerely to prevent upward yielding movementof the detent lever 18.- As one of the various possible ways *to` causethe timing mechanism to .effect automatic switch action when desired, Iblock, and lat a predetermined timewthereafter' release,the detent lever18 (respectively to .prevent and to'permit such yielding movementthereof) by means of a simple timer mechanism hereinafter to bedescribed. Y Y

lVhen the' detent arm 18 is blocked against yielding', swingingdisplacement of the actuator' from its broken line position showninFig-4 will obviously separate the actuator" lfr'o'mrthe bladestructure and tension the connecting spring 30. To establish the partsthus tensioned, a. locking strut arm 34 vis friction-pivoted at 35 tothe actuator structure, said arm at its free end riding through anopening 36 in the panelr 6 and being. guided therein by a check pin 37that horizontally spans said opening and passes through a longitudinalslot 38 in said strut a'rm'. Anotcli 39 at thefar end of this slot isadapted toengage with the check pin to hold-the actuator in itsbroken-line position in Fig. 4. The strut arm 34 may, however,Y

at any time disengage from the check pin 37 by pressing downwardly withthe thumb on a plunger trip rod 40 that passes centrally through thehandleand 'at its lower end is bent 'to-extend through, and to be'guided in, an elongated slot 42 in the side of the actuator structure,thereby to engage with atripping extension 43 of the strut arm. AplungerspringA/l .normally acts to hold the plunger rod 40 in.itsuppermost position.

The timer mechanism before referred to, is contained, for the most part,in a closed chamber within a metallic mounting box "45 back of thevpanel'Gf VPivoted at 4,6"to the r'ear face ofY the support panel 6 is abell y crank lever comprising a short arm 47 that extends horizontallyto the left from said pivot, as shown in broken lines, Fig. 1, andterminates in a' shelf-lug 48 directly beneath and engaging the lowerend of a universal presser coupling 50, that at its upper end similarlyengages with a rearwardextension 51 of the detent lever 18 to receivepresser impulses therefrom. The other, and longer',

or feeler arm52 of this bell crai'ilr lever is l angular and extendsobliquely downwardly terminating in a rearwardly Vturned end 53. Mountedfor rotation adjacent to this klower end of feelei" arm 52, is a timercam 55 noi'- inally so positioned rotatively that a notch' 56 in theperiphery thereof registers with said end 53 of the 4arm 5u to permitthe movement thereof radially inwardly. of the cam, as would obviouslybe caused by the upward vyielding of detent arm` 18 heretoforementioned. A light springl 57, however, acts yieldingly to'hold the saidend of feeler arm 52 out of. said notch and vto retain lever 18 againststop 17 and the detent- 16 in its lower position for engagement withcatchv finger 11. The tendency of nger 11 to displace detent 16 from itspath, however, -is of such relative magnitude vas to overcome thelaction of spring 57. Obviously, therefore, when the notch 56 in cam 55registers 'with the end of feeler arm 52, yieldingof the detent lever torelease the blade structure for. switch opening willbe permitted byentrance ofarm 52 into this notch.Y But Y if this notch 56, as shown infull linesi-n Fig. 1,1s displaced Vf-rom such registering position,yielding of the detent lever 18 will 'be positively blocked byengagement of feel'er tating cam 55 in one direction'is had by storingtension in,l the band spring. 60'. This spring at one end is connectedto the winding spindle 58 and at the otherend 62 to` a frame stud 63.ri'ihe spindle 58 has bearings. infront and rear frame plates 64, 64 ofthe timing movement.

vthe front of thesupport panel 6. The band spring always tends to rotatethe cam 55 clockwise to a stop-limited position wherein the peripheralnotch 56 in the cam 55 is positioned as also indicated in broken linesto register with the end of feeler arm 52.

VFrom the foregoing, it will be clear that when the timer parts arenormally de-en ergized and positioned, the blade Contact structure ofthe switch will promptly follow the actuator directly to open or closethe switch in the usual manner. lVhen, however, itis desired to causethe switch to perform anA automatic action, as to break a circuit, say,for extinguishing the lights, the actuator isl swung to its lockedposition shown in full linesin Fig.l 4 against the tension ink spring 27,-corresponding movement ofthe lblade structure being prevented by thecam-locked detent 16 in a manner hereinafter described. Spring 27, uponrktimed return of notch 56 in cam 55 to its position for registering withthe end feeler arm 52, will then cause a quick movement of the bladestructure to open the switch. As the impact between the blade structureand the actuato-r is considerable, the buffer lugs 30 and clips 31, orother suitable devices may be employed to absorb the shock.

l may vprovide as a means for winding and setting in operation the timermovement, a system of gearing that may receive operating impulse from agear segment, such as shown at 711. This' gear segment is carriedat therear end of an arm 75 that is formed to extend through a lateral opening75 in the wall of the timer compartment. and is carried as a fixed partof the actuator straddle bar 24, thereby to 'swing in fixed relation tothe actuator about the latters pivot.

In a rear corner of the timer compartment, I mayl conveniently mount, bymeans of screw studs, 77, 77, an angle-plate rack 78 having teeth eneach of its longitudinal edges and constrained for vertical movement bya long slot 79 in one of its sides thatvengages with said screw studs.

This Vrack by one of its toothed edges is positively enmeshed withsegment 7 l to slide iup and down correspondingly to swinging movementof the actuator, and by another toothed edge engages an idler gear 80rotating on a .fixed stud v82 that is mounted in the rear wall of thetimer box 45; This idler -gear is in turn enmeshed with a pinion 83 Asshown in F ig. 10, the pinion 83 vis fixed to a common hub 87 with awinding disc 85 although between said pinion and disc, a timer gear 86of greater diameter is also mounted freely to turn on, and relative to,said hub for purposes later to be explained. The ratio of gearing issuch that a full swinging stroke of actuator in its direction to openthe switch rotates the winding disc 85 substantially one complete turnin a counteiicloclwise direction, 3, 5, 7, 8, and 9.

Also mounted on stud 8%, and adjacent to hub 87, is an escapement disc90 having a bearing hub 89 and that carries two forwardly projectingprongs 91, engaging at diametrically opposite points, withcorrespondinp` openings in a winding plate 95 that is fixedly carried onthe main winding spindle 58, Figs. #1 and 6. The escapement disc 90 isalso freely rotatable on stud 8st and has connection with t-he windingdisc 85 only through releasable engagement in direction between a camlug 93 carried on the winding disc S5 and a trippable latch 941 carriedon the opposing face of the escapenient disc 90. This latch is normallypositioned by a light spring 96 againsta stop pin 97 carried on theescapement dise as shown in Figs. 5 and 8 but may yield to the oppositelimit of its swing as determined by another pin 98 also carried on theescape ment dise 90 as shown in Figs. 7 and 9. .Vhen in lits normalposit-ion, the rearwardly turned end 99 of the latch 94 is adajted to beengaged by an edge 100 of the cani lug 93, these parts, however, beingcapable of interference at no other points.

The timer setting gear 86, heretofore ineationed, carries on its forwardface a trip pin 102 extending into the pat-h of a projecting portion 103of the latch 9st, which ex tends forwardly beyond the periphei ofescapement disc 90. Two idler pinions 101 afford gearing connection ofsaid timer setting gear 86 with a similar gear 105 fixedly carried on anarbor 106 that has a bcai' vin the support panel 6, and c" ries rectlyin front of the latter the pointer-h i 66 with theusual handles 67, 67,a d a rooperating time indication dial 70. This pointer-hand has nodirect `connection with the timer cam 55 nor the spindle 58 but is heldestablished and stationary in such position as it may be desired toadjust the same, by the detent plunger ball 107, adapted to seat inopenings 108 circularly arranged in the gear 105. Obviously, therotative position of the pointer-hand bears a em Y, n... relation to therotative position of trip pin 102. and by means of the handles 67, 67,such io tative position may be varied at will.

The operation is as follows:

rlhe timer control parts are shown iu their normal positions in Fig. 9;Here the wardly the end 99 of latch 94 that normally is positioned to beengaged by the lug 93,

y and that the notch 56 in cani 55 registers ,undisturbed permitting thedetent 'with the end 53 otteeler arm 52, so that upon' theswitch-'opening stroke of the ac-y tuator (and consequent rotation otthe winding dise 85 in a counter-clockwise direction, (Fig. 9) noengagement will occur between said lug 93 and latch 94. The timer cam 55and timer movement will remain, therefore, roller 16 to yield upwardlyand permit passage of catch linger 11, and movement ot the bladestructure to open the switch, in the usual manner. v

Assuming now that etere such switchopening stroke of the actuator, thepointerhand 66 is dis lacedfiroin its zero iosition u 1 7 and the trippin 102 thereby revolved counter-clockwise to some position suoli asshown in Fig. 8, then latch 94 will be urged by spring 96 into the-pathof lug 93, so that when the latter is moved with the winding disc 85 bysaid strokeV of the actuator, the escapement disc 90 will be picked upand rotated in a direction to wind the hand spring 60 of the timingmovement. Such winding rotation of the escapement dise is, ofcourse,accompanied by corresponding` ro.y tation of the main spindle 58 andtimer cam 55, and continues during the said stroke oi the actuator untilprojection portion 103 ci latch 94 is encountered by the 'trip pin 102.At this point the said latch will be disen gaged trom said lug andreleased for automatic timed return under the stored-up power in bandspring 60, in the usual mannen-the lug 93 continuing through its fullrevolution corresponding to a iullstroke of the actuator after beingthus relieved of the escapement plate at the point predetermined by thesetting of the trip pin 102.

rTurning ot escapement .disc 90 to wind the movement spring 60 will notactuate the retarding train because a ratchet wheel 71,

that is friction mounted against a shoulder on the spindle 58 throughthe axially ex erted tension in spring 61, will slip under the nretarding pawl 72 carriedon the sideot the large retarding gear 59 inthe Vwell knownv manner. The band spring V60 obviously will bewound toan extent proportional to the rotative displacement oiescapement disc 90and will play itself out as it drives the time train and restoresescapenient disc 90, and cani 55 to their stopped positions.Y Slowmoveinento cam 55 results from the retarding action of the gear trainastransmitted to the spindle 58 through the'friction hold thereon ofratchet wheel 71 consuming an interval of time proportional `to thedegreeV its stopped position. f

rlliere are several features of operation that should be noted. Althoughlug 93 will always pick up and carry the escapement disc 90counter-clockwise to a point predetermined by the setting 'of trip pin102,. yet operative interferenceV of said lug, with latch 94, whenpassing in 'the' opposite direction7 is always prevented hy the camformation given to the lug 93-.which causes natural yielding ot' latch94, as rshown in F ig. 5. Another point to be noted is that in order forthe blade structure to be held in switchclosing position and tensionedfor timed re-V lease, thetimer cam 55 must be moved to displace thenotch 56 therein from register-l ing position with-'the end of eeler arm52, before the bladey structure'encouiiters the-.detent roller 16,. lToprovide forl this, suitable operative lostk niotion,`or clearance, isarranged between tlie blade structure and the detenta-16 when the bladestructure vis fully seated in the terminal clips 7. But in addition tothis back-lash, introduced :tort-he purpose just described, a purelyidle lost mo tion of greater extent is desirable to insure that eventhougn the blade structure is not pushed entirely back to itsswitch-closed seat, the cam lug 93 will always-return r0- tativelyrto anextentsuiiicient to" Vpass into engaging relation with the latch94,-ready, as shown .in Fie. 9, on subsequent switch opening sirolre'ot' the actuator, to wind. up and setfin operation the timing movement,in the manner before explained. p To malte allowance for this additionaland purely idle back-lash, peripheral elongation oi the notch 56 in 55is provided. It will he appreciatee that the need of such idleV lostmotion is largely due to the Ytact that a smallangular movement ot thelactuator results in a mucli'greater angular movement of the timer cain.A positive stop for the springdriven timer movement is arovided b a in11G-'f back to Zero which action will cause theV trip pin 102 to Vimpelthe escapement disc through engagement with latch 94, until these part-sare returned to'tlieir positions as in 9, regardless oi what positionthe cani lug 93 may at the time occupy.

1t ,will be appreciated that whereas, for

simplicity, 1 have chosen to disclose my iniproved timer arrangementasapplied to an electric lnifeswitch, the scope et the'invention isby nomeans limited to such application. Thus I may as readily combine 4my lIOimproved and simpliiied timer arrangement, with switch structui'es ofradically diderent types, such as either rotary or push-button snapswitches ofstandard and approved design; or my invention wherein allactuating control is concentrated in common main control handle, is asreadily embodiable in timer mechanism for a gas-valve or other device,as for electric switches. As there is nothing generically diiferent in amechanical sense between the movements of an electric contact toy malteand break an electric circuit and the movements 'of the port controlmenibcr of, for instance, a valve to open and close a conduit, it willclearly be understood that both are intended to be included by speciiicmention of either in any of the appended claims. Also I do not confinemy invention to the manner of timer control whereby the timer holds backthe switch contacts and later releasesthem for follow-up movementrelative to the actuating handle. I could as well arrange the timermovement to operate the switch contacts by means of direct timer causedactuation of the switch actuator or in other ways if desired.

Therefore my invention will be understood as not confined to thespecific embodiments thereof herein disclosed, but what I 1. In anelectric time switch, the combination with a movable circuit-governingmember; of resilient means vfor establishing tension tendingto shiftsaid member automatically between operative positions thereof; aseparately mounted detent movable to and from a positionforinter'cepting said member to prevent tension-caused shifting thereof;normally idle timing mechanism operatively related to said detent tocontrol ymember-governing movements thereof; and

a separate operating handle arranged by one movement to shiftsaidfmember directly from one to' another of its said operativepositions independently of said timing mechanism and by another movementto subject said member to the operative tension of said resilient means;together with means for operatively connecting said actuator and saidtiming mechanism so that the former also energizes and sets in operationsaid timing mechanism. f

.2. In an electric switch, the combination with a movable contactmember; of resilient moans for establishing tension tending to causecircuit-breaking movement of said member; an actuator adapted to operatesaid member and further arranged Von designed movement to energize saidresilient means; a movable detent operatively related to said member.for governing the said circuit-breaking movement thereof; and noi'-mally idle timing mechanism connected to be energized and set inoperation by the said actuator movement that energizes said sulresilient means, and adapted when so 'set in operation to controlnieinber-goveriiing movement of said detent; together with an adjustabletrip device, arranged to predetermine the operative setting of saidtimermechanism and extent oi the energization thereof as caused by saidmovement of said actuator.

3. Mechanism for timing operative movement of a detent-controlled deviceembodying, in combination; a detcnt-governing timer element mounted tobe spring-inipclled to a deinite stop-limited position, with meansautomatically active to retard said element when the latter is manuallydisplaced from its said position and released for spring-impelled returnthereto; an operating handle mounted for limited swinging travel andadapted by said travel to tension said device for operative movement;means for coupling said operating handle with said element so that thelatter is displaced from its said position by said swinging travel ofthe former; and an adjustable trip device operatively related to saidcoupling means and arranged auotomatically to free said element fromsaid handle at a selectable predetermined point in said travel of thelatter.

4r. An electric switch response timer embodying, in combination with amovable switch contact member; a relatively movable switch actuatorarranged by one movement to establish said member in circuitmakingposition; means adapted automatically to displace said member from itssaid position to break the circuit; and a normally inactive timermechanism including a locking element for preventing said displacementof the contact member; and a retarded springmotor adapted to drive saidelement to al position for operatively releasing said member; togetherwith connections whereby niovement of said switch actuator additional tosaid circuit making movement sets in operation said `spring motorautomatically to actuate said element and effect the release ot' thecontact member after a predetermined time.

5,'An electric switch response timer einbodying, in combination with amovable rswitch contact member; a relatively movable switch actuatorarranged by one movement to establish said member in circuit-makingposition; means adapted automatically to cause displacement of saidmember from its said position to break the circuit; and a normallyinactive timer `mechanism including a locking element for preventin rsaid displacement of thc Contact member, and a retarded spring motoradapted to drive said element to a position for operatively releasingsaid member; `together with connections whereby another movement of saidswitch actuator winds and sets in operation said spring motorautomatically to actua-te said element and Veffect the release ot theContact member after a predetermined time.

6. Electric switch control. mechanism, embodying in combination withanoscillatory contact member; an oscillatory actuator mounted to swingwith and positively to imvpel said member in one direction ot itsoscillation and further arranged Jroi' swinging displacement relative tosaid member in the opposite direction of oscillation; a springconnecting said actuator and said member so that said displacement ofthe former relative to the latter 'tensions the latter forcircuit-switching follow-up movement; a detent movable to a position tointercept said member thereby to prevent its said follow-up movement;means to hold said actuator when tension is established in saidconnecting spring; and normally idle timing mechanism including aretarded spring motor having operative connections with said actuatorwhereby member tensioning displacement ot the latter winds and sets inoperation said motor, with a movable timer element for holding said;detent in ,itsV intercepting position ,-said velement being connected tosaid motor thereby to be impelled to a stop-limited position whereinsai'drdetent is released to free said member.k Y

7. A time limit switchembodying in combination, a circuit controllingContact, a handle movable a designed distance to throw said contact'toclose the circuit, a power spring tensionable `by said handle to throwsaid Contact to open the circuit, av

spring impelled timer mechanism, connections whereby a portion ot themovement of said handle conditions said timer mechanism to delay thecircuit opening throw of said Contact, and means to vary andpredetermine the portion of said handle movement which acts upon saidtimer thereby to predetermine the duration of said delay.

v8. A time limit switch embodying in comhina-tion, a circuitcontrollingl contact, a handle movable a designed distance to throw saidcontact to close the circuit, aV power spring tensionable by said handleto throw said Contact to open the circuit, a'timer,

operatively related to said contact means operated by a portion of themovement ot Y said handle to condition said timer tor a period ofoperation thereby to delay during said period theV opening throw ot saidcontact, and means to vary and predetermine the portion of said handlemovement which acts upon said timer, thereby toA predetermine thesaidperiod ot' timer operation.

V9. An electric switch operating response governor embodying incombination with a circuit-controlling member ot the switch; arelatively movable actuator therefor arranged by` one movement toestablish said member in 'aV maintained operative position thereof;means adapted to be energized for automatically shitting said memberfromv itsv said position; and a normally .inactive slowacting timeradapted to render said means operative to shift said member asubstantial. interval of time `iter said timer is set in operation;together with connect-ions between said actuator and said timer wherebymovement ot said actuator sets in operation said timer.

Y l0. In switch timing mechanism, in combination, a current switchingcontact reciprocating between open and Vclosed positions, a spring totension said Contact for quick circuit switching action,a timerconditionable to edect said spring caused action of said contact, and ahandle connected to operate said Contact, and to tension saidspring, andto be movable without movement ot' said contact for conditioning saidtimer.

l1. In switch timing mechanism, in combination, a current switchingcontact reciprocating between open and closed position, a. power springto tension said contact tor quick currentswitching action, a timernormally stationed in limit position, a motor spring for impelling saidtimer to said position to effect actuation of said Contact .by saidcontact spring, and a handle connected to establish said contactselectively inr open or closed position without establishment ofopposing bias in said power spring, and connections whereby saidhandledisplaces said timer from said limit positional/1d energizes said motorspring.

l2. In switchv timing mechanism,` in combination, a timer, a motorspring to impel said timer, a switch contact governable by said timer, apower-spring to-actuate said contact, a handle-,connected to tensionboth said motor spring ,and said power spring, said handle further beingconnected to eect current switching movement ot' saidV contact aftertensioning said motor spring and wit-hout varying 'the tension alreadyestab-L lished in said motor spring.V

13. In a iowcontrol timing mechanism,

vin combination, a timer, a motor spring to impel said timer, a iowcontrol governable by said timer, a power spring to' actuate said iiowcontrol, a common handle connected to tension both said motor spring andsaid power spring, said handle being movable to operate said flowcontrol subsequent to tensioning said motor spring and without further'varying the tensionrin said motor spring.

la. In combination with a switch and timing mechanism, a handle to throwsaid switch directly without intermediate action of said timingmechanism Vand connections whereby said handle is also operative tocondition said timing mechansm to cause an automatic actuation of saidswitch.

15, In switch timing mechanism, in com bination, a spring impelledtimer', a spring actuated reciprocating contact governable by saidtimer, a common handle connected to tension said timer spring and alsoto tension said contact spring', said handle being tinther connected tothrow saidl contact in both directions without interference by saidtimer after tensioning said timer spring and without varying the tensionin said timer spring.

16, In switch timing mechanism, in combination with a reciprocatingswitch contact, means to tension said contact l'or quick circuitswitching acti-on, a spring' driven timer to govern said contact action,a handle having connections to throw said contact in both directionswithout interference by said timer and to energize said contacttensioning means by movement relative to said contact and further havingconnections to energize and set in operation said timer.

17. In combination with power means for actuating a device to be timed,a timer normally stationed at limit position and displafceable from saidposition for self returning travel to effect the actuation of said dewvice through said means, a common handle toroperating both said powermeans and for said timer, and connections whereby move! ment of saidhandle in onedirection both displaces said timer from limit position andenergizes the power means to actnate said device. l

18. Timingl mechanism embodying, in combination with the device to be'timed, a spring 'driven time movement, a timer controlling the actuationof said device and impellable by said' movement to a limit position, ahandle operable in one direction to displace said timer from saidposition and simultaneously wind the movement spring, and meanspermitting reverse movement of both said handle and said timer withoutunwinding saidspring.

19. In combination, timing mechanism, a device to be timed, a timesetting handle, a time movement spring arranged to be energized bydisplacement of said handle from one position, said handle beingmanually returnable to said position without nnwinding said movementspring.

20. In combination, timing mechanism, a device to be timed, a timesetting handle connected to operate selectively with and without timecontrol the device to be timed, a time ymovement spring arranged to been ergized by displacement ot saidV handle from one position whenoperating said device with time control, said handle being manuallyreturnable toward its said position without nnwinding said movementspring.

21. A time limit switch embodying in combination, a circuit controllingContact, a handle movable a full distance to throw said contact to closethe circuit, a power spring tensionable by said handle to throw saidcontact to open the circuit, a spring impelled timer, mechanism wherebya portion ot the movement ot' said handle conditions said timer to delaythe circuit openingl throw ot' said contact, and me. a 'y andpredetermine the conditioning et' said timer as efi'ected by themovement et said handle through its said full distance.

Q2. Time control mechanism embodying in combination, a i'iow control, ahandle to operate said tlow control, a timer to control the operation otsaid flow control and also operated b v said ha"i and setting means tovary and predeteiAAA i e the action oi said handle upon said timer.

23. In combination with an electric switch, a handle actnatable foropenii f and closing s* Yitch, a timer mechai ism eilective uring itsrunning period to delay an action i said switch consequent to actuationot raid handle, connections whereby said handle tarts the running periodof said timer mechanism, and means separate from said handle to vary andprede-termine the duration of said running period prior to the startingthereole by said handle.

2st. In combination with an electric switch, handle actuatable foropening and closing said switch, a timer mechanism effective diiring itsruiming period to delay an action of sait-L witch consequent toactuation of said handle, connections whereby said handle starts the therunning period of said timer mechanism, and means separate trom saidhandle and adjustable both prior to and slibsequent to the actuation ot'said handle which starts said running period thereby to vary anddetermine the duration oil said period.

25. Time control mechanism embodying in combination, a tlow control, ahandle connected to operate said tlow control in detinite l mechanicalrelation thereto, and a timer tor controlling automatic operation ofsaid flow control and connected to be operated by said handle invariable mechanical relation to said Jdow control.

26. In combination with a flow control, timing mechanism, handle tooperate said control directly without intermediate action oi timingmechai'iism, and connections whereby said handle conditions said timingmechansm to cause an automatic actuation of said control.

27. A. time limit tlow control embodying in combination, a ilowcontrolling member, a handle movable to throw said member to atleet theflow, a power spring to throw said member bach te its original position,a time giving mechanism, connections whereby movement ot said handleconditions said time giving mechanism to govern the said throw-back ofsaid member, and means settable separately from movement of said handlewith connections to vary and predetermine thereby the time at which saidtime givbach ot said member, said means remaining so set and sooperating on subsequent actuations of said member and conditioning of sd mechanism by said handle, thereby to repeat the same time determiningfunction without further manipulation of said means.

QS. In a time limit switch, the combination with a movable contactmember, of resilient means ,tor causing circuit breaking movement oi'said member, a common handle to operate said member and to energize saidresilient means, normally idle timing mechanism connected to be set inoperation by movement of said handle, and adapted to control the act-ionof said resilient means upon said member, together With an adjustabietrip device settable separately from said handle and operativethereafter to repeatedly determine the period of running oi' said`timing mechanism prior to its circuit brealringei'ect uponsaid membereach time the timing mechanism is set in operation for that purpose bysaid handle.

29.7111 switch timing mechanism, in com- Vbination, a current switchingcontact, a

power spring for effecting quick current p sivitchii'ig action of saidcontact, a normally ingmechanism shall cause the said throW` idle timegiving mechanism,r and conditionable to runt'or governing said springcaused action of said contact, and a handle connected to set saidcont-act selectively both in open and closed positions, and connectionswhereby movement-of said handle conditions said time giving'. mechanismfor running, together with a trip settable separately from said'handle,and means rendering said trip operable to determine the period otrunningof said mechanism and the time of action of Contact governed thereby.

30. 1n combination with a flow control and timing mechanism, a handlehaving a degree of movementto operate said control directly Withoutintermediate effect of said timing mechanism, connections whereby saidhandle is also operative to condition said timing mechanism to cause anautoma-tic actuation of said control, and a trip member stationable invariable positions to determine the time of said automatic actuationyand to vary same disproportionately to said degree of movement of saidhandle. v i

Signed at Boston, h/lassachusetts, this 8th day of May, 1924.

RAYMOND D. SMITH.

